SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a panel is central positioning mechanism for automation line, low in manufacturing cost, and can carry out accurate positioning and fix to the work piece.
The utility model discloses a technical scheme that central positioning mechanism adopted for panel automation line is:
a central positioning mechanism for an automatic plate production line comprises a first positioning assembly, a second positioning assembly and a mounting plate, wherein the first positioning assembly and the second positioning assembly are arranged on the mounting plate in a crossed mode, the first positioning assembly comprises a first driving piece, a first backup plate group and a second backup plate group, and the first driving piece drives the first backup plate group and the second backup plate group to move relatively or back to back; the second positioning assembly comprises a second driving piece and a third back plate group driven by the second driving piece; the bearing platform is arranged among a first leaning plate group, a second leaning plate group and a third leaning plate group, the first leaning plate group, the second leaning plate group and the third leaning plate group move towards the center of the bearing platform and clamp and position a workpiece placed on the bearing platform, a negative pressure hole is formed in a bearing surface of the bearing platform, and the negative pressure hole can be externally connected with negative pressure equipment to adsorb and fix the workpiece.
Preferably, the bearing surface of the bearing platform is provided with a negative pressure groove, the negative pressure hole is communicated with the negative pressure groove, and the negative pressure groove extends along the length direction of the bearing platform.
According to a preferable scheme, a bottom plate is fixed at the bottom of the bearing table, a negative pressure cavity is formed in the top surface of the bottom plate, the negative pressure hole is communicated with the negative pressure cavity, and the negative pressure cavity is externally connected with negative pressure equipment.
As a preferred scheme, the first driving part comprises a motor, a driving wheel driven by the motor, a driven wheel, a conveying belt for driving and connecting the driving wheel and the driven wheel, and a guide rail, the first backup plate group and the second backup plate group are respectively fixed on two opposite sides of the conveying belt, and the first backup plate group and the second backup plate group are slidably arranged on the guide rail.
As a preferred scheme, the driven wheel is fixed on a regulating block, a positioning groove is formed in the mounting plate, the width of the positioning groove is matched with that of the regulating block, and the regulating block is arranged in the positioning groove and can move along the length direction of the positioning groove to regulate the tension of the conveying belt.
Preferably, the conveyor belt is a synchronous belt, the first back plate group and the second back plate group include an engaging plate provided with a plurality of tooth grooves and a clamping plate fixed to the engaging plate, and the conveyor belt is clamped between the engaging plate and the clamping plate.
Preferably, the first backup plate set comprises a fixed plate slidably connected with the guide rail, a sliding plate slidable relative to the fixed plate, and an elastic return member connecting the fixed plate and the sliding plate, wherein the elastic return member is used for providing a return force of the sliding plate.
As the preferred scheme, one side of the sliding plate bends and extends to the position below the top surface of the fixed plate to form a limiting block, and the limiting block is used for limiting the relative position of the sliding block and the fixed plate when the sliding block is not stressed.
Preferably, the first backrest plate group, the second backrest plate group and the third backrest plate group are respectively provided with a row of alignment wheel groups, and each alignment wheel group comprises an alignment pin, a bearing sleeved on the alignment pin and an alignment sleeve arranged outside the bearing.
Preferably, the bearing surface of the bearing table is provided with a smooth layer for reducing friction.
The utility model discloses a panel is center positioning mechanism for automation line's beneficial effect is: the first driving piece drives the first backup plate group and the second backup plate group to move relatively, and glass is clamped and positioned. And meanwhile, the third backrest group moves towards the bearing table under the driving of the second driving piece, and the third backrest group and the bearing table synchronously move to accurately position the workpiece placed on the bearing table. The positioning structure is used for completing positioning under the condition that the first backup plate group, the second backup plate group and the third backup plate group are jointly operated, and has a relatively simple structure and low manufacturing cost. The negative pressure hole on the bearing platform provides the negative pressure after the location and adsorbs the work piece on the bearing platform, and the work piece is difficult for sliding, and the location is more reliable.
Detailed Description
The invention will be further elucidated and described with reference to the following embodiments and drawings in which:
referring to fig. 1, a center positioning mechanism for an automatic sheet material production line includes a first positioning assembly 20, a second positioning assembly 30 and a mounting plate 10. The mounting plate 10 serves as a support throughout the mechanism. The first positioning assembly 20 and the second positioning assembly 30 are disposed on opposite sides of the mounting plate 10. Preferably, the first positioning assembly 20 and the second positioning assembly 30 are perpendicular to each other.
Referring to fig. 2 and 3, the first positioning assembly 20 includes a first driving member 21, a first backrest set 23, and a second backrest set 24, and the first driving member 21 drives the first backrest set 23 and the second backrest set 24 to move relatively or away from each other.
The first driving member 21 includes a motor 211, a driving wheel 212 driven by the motor 211, a driven wheel 213, a transmission belt 22 for driving the driving wheel 212 and the driven wheel 213, and a guide rail 25, wherein the first back plate group 23 and the second back plate group 24 are respectively fixed on two opposite sides of the transmission belt 22, and the first back plate group 23 and the second back plate group 24 are slidably disposed on the guide rail 25. When the first driving member 21 drives the conveyor belt 22, the first and second back plate groups 23 and 24 move relatively along the guide rail 25 to clamp and position the glass. The motor 211 is preferably a stepper motor. The motor 211 rotates forward to accurately correct the workpiece by clamping, rotating backward and loosening.
The driven wheel 213 is fixed on a regulating block 214, a positioning groove 11 is formed on the mounting plate 10, the width of the positioning groove 11 is matched with that of the regulating block 214, and the regulating block 214 is arranged in the positioning groove 11 and can move along the length direction of the positioning groove 11 so as to regulate the tension of the conveyor belt 22.
The conveyor belt 22 is a synchronous belt, the first backrest group 23 and the second backrest group 24 include an engaging plate 26 provided with a plurality of tooth grooves and a clamping plate 27 fixed to the engaging plate 26, and the conveyor belt 22 is clamped between the engaging plate 26 and the clamping plate 27. The holding and fixing manner is stable and reliable due to the tooth grooves of the engaging plates 26 engaging with the gear teeth of the conveyor belt 22.
The second positioning assembly 30 includes a second driving member 31 and a third backrest set 32 driven by the second driving member 31. The second driver 31 is preferably a pneumatic cylinder.
Referring to fig. 2 and 4, the center positioning mechanism for an automatic sheet material production line further includes a supporting platform 40, and the supporting platform 40 is disposed between the first supporting plate group 23, the second supporting plate group 24, and the third supporting plate group 32. The first, second, and third back plate groups 23, 24, and 32 move toward the center of the table 40, and clamp and position the workpiece placed on the table 40. The bearing surface of the bearing table 40 is provided with a negative pressure hole 41 which can be externally connected with a negative pressure device to adsorb and fix a workpiece. After positioning, the negative pressure hole 41 on the bearing table 40 provides negative pressure to adsorb the workpiece on the bearing table 40, and simultaneously provides positive pressure to release the workpiece.
The bearing surface of the bearing platform 40 is provided with a negative pressure groove 42, the negative pressure hole 41 is communicated with the negative pressure groove 42, and the negative pressure groove 42 extends along the length direction of the bearing platform 40 so as to enlarge the area for adsorbing the workpiece, so that the adsorption force born by the workpiece is more uniform, and the workpiece is prevented from sliding in the subsequent processing process. Furthermore, one end of the negative pressure groove 42 is in a shape of a Chinese character 'wang' to further increase the adsorption area.
A bottom plate 43 is fixed at the bottom of the bearing table 40, a negative pressure cavity 44 is formed on the top surface of the bottom plate 43, the negative pressure hole 41 is communicated with the negative pressure cavity 44, and the negative pressure cavity 44 is externally connected with negative pressure equipment.
Referring to fig. 2 and 3 again, the first backrest set 23 includes a fixing plate 231 slidably connected to the guide rail 25, a sliding plate 232 slidable relative to the fixing plate 231, and an elastic return member 233 connecting the fixing plate 231 and the sliding plate 232, wherein the elastic return member 233 is used for providing a return force for the sliding plate 232 to achieve soft buffering. In the clamping and positioning process, when impact occurs or the clamping force is too large, the sliding plate 232 can move away from the workpiece, so that the workpiece is prevented from being damaged.
Specifically, a slide rail is fixed on the fixing plate 231, a slide block is arranged on the slide rail, and the slide block is fixedly connected with the slide plate 232. The elastic restoring member 233 has one end fixed to the fixing plate 231 by a screw and the other end fixed to the sliding plate 232 by a screw. Wherein the elastic restoring member 233 is preferably a spring.
The sliding plate 232 is bent to extend to a position below the top surface of the fixing plate 231 to form a limiting block 234, and the limiting block 234 is used for limiting the position of the sliding block relative to the fixing plate 231 when the sliding block is not stressed.
The first backrest set 23, the second backrest set 24 and the third backrest set 32 are all provided with a row of alignment wheel sets 33. The aligning wheel set 33 is disposed on the sliding plate 232 in the first backrest set 23, and the aligning wheel set 33 is disposed on a plate body slidable relative to the guide rail 25 in the second backrest set 24 and the third backrest set 32. The alignment wheel set 33 includes an alignment pin 331, a bearing 332 sleeved on the alignment pin 331, and an alignment sleeve 333 disposed outside the bearing 332. Specifically, the bearings 332 are provided in two sets. The workpiece is contacted with the aligning wheel set 33 in the positioning process, and the friction force in the positioning and moving process of the workpiece is reduced by utilizing the aligning wheel set 33. The alignment sleeve 333 is preferably made of PPE material. A protective cover is arranged on the aligning wheel set 33.
The first positioning assembly 20 further includes two travel switches 28 disposed on the mounting plate 10, and the two travel switches 28 are disposed on one side of the first back plate group 23 and are used for limiting a distance that the first back plate group 23 and the second back plate group 24 move relative to each other or away from each other.
In the above solution, the bearing surface of the bearing table 40 is provided with a smooth layer for reducing friction, and the smooth layer is preferably a teflon layer.
Referring to fig. 2, in the above solution, a positioning shaft 12 is disposed in a middle region of the mounting plate 10, and when the center positioning mechanism is mounted, the positioning shaft 12 is used for positioning, so as to improve the mounting and positioning accuracy.
The utility model discloses a panel is center positioning mechanism for automation line, with first lean on group 23, second to lean on group 24 to fix respectively in the relative both sides of conveyer belt 22, when first driving piece 21 drive conveyer belt 22, first lean on group 23, second to lean on group 24 to press from both sides tight location along guide rail 25 relative motion with glass. Meanwhile, the third backrest set 32 moves towards the bearing table 40 under the driving of the second driving piece 31, and the workpieces placed on the bearing table 40 are accurately positioned through synchronous movement of the third backrest set and the second driving piece. After positioning, the negative pressure hole 41 on the bearing table 40 provides negative pressure to adsorb the workpiece on the bearing table 40, so that the workpiece is not easy to slide, and the positioning is more reliable.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.